Manner of stiffening circular saws



UNTTED sTATns PATENT oTTIoE.

ELIJAH PRATT, OF WASHINGTON COUNTY, NEV YORK.

MANNER OF STIFFENING CIRCULAR SAWS.

Specification of Letters Patent No.

To all whom it may concern: i

Be it known that I, ELrJAr-I PRATT, of 1Washington county, State of NewYork, have invented a new and useful Combination of Circular-Saw Platesfor Sawing; and I do hereby declare that the following isa clear andexact description of the construction and operation of the same,reference being had to the annexed drawing, making part. of thisspecication.

The drawing represents a perspective view of the circular saw platescombined, thus forming the complete saw G. A knife, n, is placed in thesaw Gr, and maybe used in connection with it for the purpose of planing.The saw plates are two in number, placed one upon the other, and rivetedonly 3.262, dated September 14, `1843.

at, or near their circumference so as to act as levers upon, and stiftenone another.

s, s, and s are the rivets that fasten the 2o saw plates together.

t, and t, are rivets that fasten the saw upon a head, when it is to beused for planing Awith the knife n.

lVhat I claim as my invention and desire 25 to secure by Letters Patent,is-

The method of stiffening circular saws as above described, by makingthem of two separate plates fastened substantially as de-

